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LTC1450 PDF预览

LTC1450

更新时间： 2024-11-21 14:58:19
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
16页 290K
描述
采用 SSOP 封装的并行输入、12 位轨至轨微功率 DAC

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中文翻译

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LTC1450 数据手册

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LTC1450/LTC1450L  
Parallel Input, 12-Bit  
Rail-to-Rail Micropower  
DACs in SSOP  
U
FEATURES  
DESCRIPTION  
TheLTC®1450/LTC1450Larecompletesinglesupply,rail-  
to-rail voltage output, 12-bit digital-to-analog converters  
(DACs)ina24-pinSSOPorPDIPpackage.Theyincludean  
output buffer amplifier, reference and a double buffered  
parallel digital interface.  
■
■
■
12-Bit Resolution  
■
3V Operation (LTC1450L) ICC: 250µA Typ  
■
5V Operation (LTC1450) ICC: 400µA Typ  
■
Parallel 12-Bit or 8 + 4-Bit Double Buffered  
The LTC1450 operates from a 4.5V to 5.5V supply. The  
outputcanbepinstrappedfor4.095Vor2.048Vfull-scale.  
It has a 2.048V internal reference.  
Digital Input  
■
Internal Reference  
■
Output Buffer Configurable to Gain of 1 or 2  
Configurable as a Multiplying DAC  
Internal Power-On Reset  
■
The LTC1450L operates from a 2.7V to 5.5V supply. The  
output can be pin strapped for 2.5V or 1.22V full-scale. It  
has a 1.22V internal reference.  
■
■
U
The LTC1450/LTC1450L offer true stand-alone perfor-  
mance. In addition, the reference output, high and low  
reference inputs and gain setting resistor are brought to  
pins for maximum flexibility.  
APPLICATIONS  
■
Digital Calibration  
Industrial Process Control  
Automatic Test Equipment  
Arbitrary Function Generators  
Battery-Powered Data Conversion Products  
Feedback Control Loops and Gain Control  
■
■
, LTC and LT are registered trademarks of Linear Technology Corporation.  
■
■
■
U
TYPICAL APPLICATION  
LTC1450: 5V  
LTC1450L: 3V TO 5V  
REFOUT  
REFHI  
V
CC  
D11 (MSB)  
REFERENCE  
LTC1450: 2.048V  
LTC1450L: 1.22V  
UPPER  
4-BIT  
INPUT  
LATCH  
D8  
D7  
12-BIT  
DAC  
LATCH  
0.5  
0.0  
DATA IN FROM  
MICROPROCESSOR  
DATA BUS  
12-BIT  
DAC  
+
–
LTC1450:  
V
OUT  
0V TO 4.095V  
LOWER  
8-BIT  
INPUT  
LATCH  
LTC1450L:  
0V TO 2.5V  
D0 (LSB)  
CSMSB  
WR  
FROM  
MICROPROCESSOR  
DECODE LOGIC  
CSLSB  
–0.5  
LDAC  
CLR  
0
512 1024 1536 2048 2560 3072 3584 4095  
CODE  
POWER-ON  
RESET  
LTC1450  
LTC1450L  
FROM  
SYSTEM RESET  
1450/50L TA02  
GND  
REFLO  
X1/X2  
1450/50L TA01  
1
1234567...16

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